springboot2整合kafka

一、下载和启动kafka

启动kafka服务之前要先启动zookeeper，目前kafka的压缩包中是包含zookeeper的

1、从官网下载kafka的压缩包：http://kafka.apache.org/downloads
2、解压下载的压缩包 ，我本地解压后的kafka文件夹放在了E:\keluosi目录下
3、启动zookeeper

E:\keluosi\kafka_2.11-1.1.0\bin\windows>.\zookeeper-server-start.bat ..\..\config\zookeeper.properties

4、启动kafka

E:\keluosi\kafka_2.11-1.1.0\bin\windows> .\kafka-server-start.bat ..\..\config\server.properties

二、创建springboot项目进行整合

消息发送方

1、导入kafka的jar包

<dependency>
    <groupId>org.springframework.kafka</groupId>
    <artifactId>spring-kafka</artifactId>
</dependency>

2、配置application.yml文件

server:
  port: 11000
spring:
  kafka:
    bootstrap-servers: localhost:9092

3、编写发送消息的代码

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class KafkaController {

    @Autowired
    private KafkaTemplate<String, String> kafkaTemplate;

    @RequestMapping("/send")
    public String send(String name) {
        kafkaTemplate.send("mytopic", name);
        return name;
    }

}

消息接收方

1、导入kafka的jar包

<dependency>
    <groupId>org.springframework.kafka</groupId>
    <artifactId>spring-kafka</artifactId>
</dependency>

2、配置application.yml文件

server:
  port: 11001
spring:
  kafka:
    bootstrap-servers: localhost:9092
    consumer:
      group-id: mygroup

3、编写发送消息的代码

import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

/**
 * @author: keluosi@bicitech.cn
 * @review:
 * @date: 2018/9/14
 */
@Component
public class MyConsumer {

    @KafkaListener(topics = "mytopic")
    public void listen(ConsumerRecord<?,String> record) {
        String value = record.value();
        System.out.println(value);
        System.out.println(record);
    }
}

进行测试

1、输入url地址，访问消息发送方

2、观察后端控制台打印